Oh, no! Seal and Heidi Klum join the list of celebrities threatening to leave the U.S. if John McCain wins Tuesday. So far, potential celeb expats include Susan Sarandon, Stephen Baldwin and Michael Stipe. Tina Fey says she's leaving Earth, fer crying out loud. This is getting serious, people. There may not be any celebrities left if the Republicans keep control of the White House. Whose lives will we have to obsess about? More important, whom will I have to write about? Other than die-hard Republican creepy fame-mongers Heidi Montag and Spencer Pratt and Elisabeth Hasselbeck? Seal told this month's...